A student of Yasogami High School, Kanji often skips classes and apparently gets into many fights in the streets. His family runs a textile shop with the Amagis being their acquainted costumers, and Kanji is also very skilled with tailoring for that very reason. He is portrayed as being insecure about his sexuality after meeting Naoto (who disguises as a boy) and developing a minor crush on her. He tends to go red whenever he is around Naoto.